lm21215mhx National Semiconductor Corporation, lm21215mhx Datasheet - Page 5

• Manufacturer Part Number: lm21215mhx
• Description: 15a High Efficiency Synchronous Buck Regulator
• Manufacturer: National Semiconductor Corporation

Typical Performance Characteristics
(1.8mΩ R
DCR
-0.01
-0.02
-0.03
-0.04
0.04
0.03
0.02
0.01
0.00
100
), C
1.5
1.4
1.3
1.2
1.1
1.0
98
96
94
92
90
88
86
84
82
80
3.0
Non-Switching I
SS
0
0
= 33nF, T
VIN = 3.3V
VIN = 5.0V
VIN = 3.3V
VIN = 5.0V
2
Load Regulation
OUTPUT CURRENT (A)
3.5
OUTPUT CURRENT (A)
3
INPUT VOLTAGE (V)
Efficiency
4
A
4.0
= 25°C for efficiency curves, loop gain plots and waveforms, and T
6
QTOTAL
6
4.5
9
vs. V
8
12
IN
5.0
10
12
15
5.5
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Unless otherwise specified: V
(VOUT = 3.3 V, Inductor P/N SER2010-102MLD)
Non-Switching I
1.20
1.17
1.14
1.11
1.08
1.05
1.02
0.99
0.96
0.93
0.90
-0.02
-0.04
-0.06
-0.08
-0.10
0.10
0.08
0.06
0.04
0.02
0.00
100
99
98
97
96
95
94
93
92
91
90
-40 -20 0
JUNCTION TEMPERATURE (°C)
3.0
0
IAVIN
IPVIN
VIN = 4.0V
VIN = 5.5V
IOUT = 0A
IOUT = 12A
3.5
Line Regulation
OUTPUT CURRENT (A)
3
AVIN
INPUT VOLTAGE (V)
Efficiency
20 40 60 80 100 120
and I
IN
4.0
= 5V, V
6
J
PVIN
= 25°C for all others.
4.5
vs. Temperature
OUT
9
= 1.2V, L= 0.56µH
5.0
12
0.180
0.172
0.164
0.156
0.148
0.140
0.132
0.124
0.116
0.108
0.100
5.5
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